Re: Shared memory?

[mika dot laitio at sysline dot com]

I am also having problems with shared memory segments in Windoes-dll.
I trying to make a dll which- can be used from two different application 
(process)  and which can still share the same data-segment.
(Ie. application two can read data that is set by application one)

I need to use -mno-cygwin option while compiling this dll.

Mika





Harold L Hunt II <huntharo@msu.edu>
Sent by: cygwin-xfree-owner@cygwin.com
30.09.2002 22:59
Please respond to cygwin-xfree

 
        To:     cygwin-xfree@cygwin.com
        cc: 
        Subject:        Re: Shared memory?


Jean-Claude,

Yes, but you have to run some service that supports the SHM model (I 
forget the package name or whether it was ever rolled into a Cygwin 
setup package that is in the primary distribution, and for anyone about 
to jog my memory: I don't care either).

Go look at the KDE on Cygwin pages if you want more information.  They 
have to build Cygwin/XFree86 with the MITSHM extension in order to 
support KDE.  The ``cygipc'' library or package comes to mind, as we 
have some #ifdef test in xc/config/cf/cygwin.* that check CygIPC.

In case you were wondering, MITSHM is not enabled in the default build, 
nor in the default Cygwin/XFree86 distribution, because the cygipc 
library/package/whatever is either 1) not included in the default 
distribution, 2) not stable enough, 3) not automatically installed with 
absolutely no user intervention, or 4) because no one poked me to let me 
know that the previous 3 possibilities have all been taken care of.

There, that should give you enough to Google on.

Harold

Jean-Claude Gervais wrote:
> Does Cygwin support any equivalent to the *nux shared memory APIs?
> The  shm* functions.
> 
> Thanks.
> 
>